1 // SPDX-License-Identifier: GPL-2.0-or-later
3  *  Driver for Freescale's 3-Axis Accelerometer MMA8450
42 static int mma8450_read(struct i2c_client *c, unsigned int off)  in mma8450_read()  argument
46 	ret = i2c_smbus_read_byte_data(c, off);  in mma8450_read()
48 		dev_err(&c->dev,  in mma8450_read()
50 			off, ret);  in mma8450_read()
55 static int mma8450_write(struct i2c_client *c, unsigned int off, u8 v)  in mma8450_write()  argument
59 	error = i2c_smbus_write_byte_data(c, off, v);  in mma8450_write()
61 		dev_err(&c->dev,  in mma8450_write()
63 			off, error);  in mma8450_write()
70 static int mma8450_read_block(struct i2c_client *c, unsigned int off,  in mma8450_read_block()  argument
75 	err = i2c_smbus_read_i2c_block_data(c, off, size, buf);  in mma8450_read_block()
77 		dev_err(&c->dev,  in mma8450_read_block()
126 	 * Sleep mode poll rate - 50Hz  in mma8450_open()
127 	 * System output data rate - 400Hz  in mma8450_open()
128 	 * Full scale selection - Active, +/- 2G  in mma8450_open()
154 	input = devm_input_allocate_device(&c->dev);  in mma8450_probe()
156 		return -ENOMEM;  in mma8450_probe()
160 	input->name = MMA8450_DRV_NAME;  in mma8450_probe()
161 	input->id.bustype = BUS_I2C;  in mma8450_probe()
163 	input->open = mma8450_open;  in mma8450_probe()
164 	input->close = mma8450_close;  in mma8450_probe()
166 	input_set_abs_params(input, ABS_X, -2048, 2047, 32, 32);  in mma8450_probe()
167 	input_set_abs_params(input, ABS_Y, -2048, 2047, 32, 32);  in mma8450_probe()
168 	input_set_abs_params(input, ABS_Z, -2048, 2047, 32, 32);  in mma8450_probe()
172 		dev_err(&c->dev, "failed to set up polling\n");  in mma8450_probe()
181 		dev_err(&c->dev, "failed to register input device\n");  in mma8450_probe()
212 MODULE_DESCRIPTION("MMA8450 3-Axis Accelerometer Driver");